Gold nanoparticles as fine tuners of electrochemical properties of the electrode/solution interface
文献类型：期刊论文
| 作者 | Cheng WL ; Dong SJ ; Wang EK |
| 刊名 | langmuir
 |
| 出版日期 | 2002 |
| 卷号 | 18期号:25页码:9947-9952 |
| 关键词 | CONTROLLED NUCLEATION COLLOID MONOLAYERS COVALENT BINDING ELECTRODES SURFACES AU VOLTAMMETRY CHARGE MODEL FILMS |
| ISSN号 | 0743-7463 |
| 通讯作者 | wang ek |
| 中文摘要 | recently, a novel approach for preparing sers and spr substrates was developed, which indicates a potential application in tailoring the interfacial structure of an electrode surface. in this study, (3-mercaptopropyl)trimethoxysilane (mptms) was selected as a polymeric adhesive layer, and a low concentration of colloid au solution was used to achieve a more accurate control over interface morphology at nanoscale dimensions due to slow self-assembling kinetics of gold nanoparticle's. subsequent seeding growth of these mptms-supported submonolayers of gold nanoparticles in au3+/nh2oh aqueous solution enlarges particle size and eventually results in the generation of conductive gold films (similar to previous (3-aminopropyl)trimethoxysilane-supported gold films). such tunable interface structure was evaluated by atomic force microscopy (afm). also, ac impedance spectroscopy (acis) and cyclic voltammograms were performed to evaluate electrochemical properties of the as-prepared interfaces by using fe(cn)(6) (3-/4-) couples as a probe. furthermore, relevant theories of microarray electrodes were introduced into this study to explain the highly tunable electrochemical properties of the as-prepared interfaces. as a result, it is concluded that the electrochemical properties toward fe(cn)(6) (3-/4-) couples are highly dependent on the active nanoelectrode (nanoparticles) area fraction and nanoparticles are fine-tuners of interfacial properties because the number density. (numbers/unit area) and size of nanoparticles are highly tunable by self-assembling and seeding growth time scale control. this is in agreement with the theoretical expectations for a microarray electrode if a single nanoparticle tethered to a blocking sam is taken as a nanoelectrode and 2-d nanoparticle assemblies are taken as nanoelectrode arrays. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000179719600050 |
| 公开日期 | 2010-11-03 |
| 源URL | [http://202.98.16.49/handle/322003/18151]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Cheng WL,Dong SJ,Wang EK. Gold nanoparticles as fine tuners of electrochemical properties of the electrode/solution interface[J]. langmuir,2002,18(25):9947-9952. |
| APA | Cheng WL,Dong SJ,&Wang EK.(2002).Gold nanoparticles as fine tuners of electrochemical properties of the electrode/solution interface.langmuir,18(25),9947-9952. |
| MLA | Cheng WL,et al."Gold nanoparticles as fine tuners of electrochemical properties of the electrode/solution interface".langmuir 18.25(2002):9947-9952. |
入库方式： OAI收割
来源：长春应用化学研究所
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